The Application of Numerical Simulation on Groundwater Yield Calculation of Seepage Well

In regions where rivers are not perennial or have low flow conditions during most part of the year(like banks of the Yellow River), the seepage wells are placed in the riverbed to obtain uninterrupted supply of naturally filtered groundwater through highly permeable saturated riverbed aquifers. Due to the complexities of flow, no exact analytical solution exists to provide steady state discharge drawdown relationship for seepage well. To overcome this difficulty, in this study a numerical model was developed for seepage well by adapting the equivalent hydraulic conductivity and the coupled seepage-pipe flow model. The numerical model is proposed to be applied for groundwater exploitation in Zaolinping Village which locates at Shenmu County, China. By calculation, the water yield of study area is 47600 m/d. The results show that the proposed methodology based on the application of the coupled seepage-pipe flow model has been found to be efficient in constructing riverbed aquifer model with seepage well, which has a positive theoretical significance for guiding the design and construction of seepage well. Keywords—seepage well, equivalent hydraulic conductivity, the coupled seepage-pipe flow model, groundwater yield